I examined database and I found nothing abnormal. I compared two records - one related to call which was present on calls list in telephone and one which was displayed in Conversations. They were basically the same. I noticed that problematic phone numbers where present in other database - drafts.db, but deleting records from it did not solve problem. @fpbrooks Have you noticed when it happens? I will be trying to reproduce it. @Tomaszd To be honest, I did not check. I googled for it but I didn't find anything useful.